opendaylight/blueprint/src/main/java/org/opendaylight/controller/blueprint/ext/NotificationListenerBean.java

   1 /*
   2  * Copyright (c) 2016 Brocade Communications Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.blueprint.ext;
   9
  10 import org.opendaylight.controller.md.sal.binding.api.NotificationService;
  11 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  12 import org.opendaylight.yangtools.yang.binding.NotificationListener;
  13 import org.osgi.framework.Bundle;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 /**
  18  * Blueprint bean corresponding to the "notification-listener" element that registers a NotificationListener
  19  * with the NotificationService.
  20  *
  21  * @author Thomas Pantelis
  22  */
  23 public class NotificationListenerBean {
  24     private static final Logger LOG = LoggerFactory.getLogger(NotificationListenerBean.class);
  25     static final String NOTIFICATION_LISTENER = "notification-listener";
  26
  27     private Bundle bundle;
  28     private NotificationService notificationService;
  29     private NotificationListener notificationListener;
  30     private ListenerRegistration<?> registration;
  31
  32     public void setNotificationService(NotificationService notificationService) {
  33         this.notificationService = notificationService;
  34     }
  35     public void setNotificationListener(NotificationListener notificationListener) {
  36         this.notificationListener = notificationListener;
  37     }
  38
  39     public void setBundle(Bundle bundle) {
  40         this.bundle = bundle;
  41     }
  42
  43     public void init() {
  44         LOG.debug("{}: init - registering NotificationListener {}", bundle.getSymbolicName(), notificationListener);
  45
  46         registration = notificationService.registerNotificationListener(notificationListener);
  47     }
  48
  49     public void destroy() {
  50         if(registration != null) {
  51             LOG.debug("{}: destroy - closing ListenerRegistration {}", bundle.getSymbolicName(), notificationListener);
  52             registration.close();
  53         } else {
  54             LOG.debug("{}: destroy - listener was not registered", bundle.getSymbolicName());
  55         }
  56     }
  57 }